That's how far it is via surface streets between the heliports on the east and west sides of Manhattan, a long, narrow island best known as the nexus of New York City.
Emphasis on "narrow." Hold up your index finger. That, roughly, is the shape of Manhattan. Not in a million years did I think that there would be a market for a helicopter service to ferry people from one side to the other, but here we are: Blade, which is like an Uber for helicopters and small aircraft, is letting you get around hellish Pope-related traffic and street shutdowns in Manhattan with trips between its E. 34th Street and W. 30th Street bases for $95.